Scott Foil 15 Shimano Carbon Aero Road Race Bike. The Foil 15′s carbon frame has been. Created to ensure that the entire. Fuselage keeps air flowing cleanly over it, rather than weaving in and out and disrupting stability. An integrated seatclamp and oversized bottom bracket keep the bike light and stiff, with the carbon seatpost sporting a. Syncros RP1.5 saddle on titanium rails. The Shimano Ultegra drivetrain of the. Foil 15 uses electronic shifting technology for increased speed and smoothness to each gear change, which is precisely the kind of capability that professional racers look for in a road bike.